Results 191 to 200 of about 380,287 (225)

Seismic imaging for seismic geomorphology beyond the seabed: potentials and challenges

Geological Society, London, Special Publications, 2007
Abstract A successful study of seismic geomorphology depends not only on knowledge of sedimentological, geomorphological principles and the local geological setting, but also on quality of the seismic geomorphological imaging. A thorough understanding of how seismic waves respond to geomorphology of depositional sequences and facies is ...
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Seismic geomorphology of a salt‐controlled deltaic depositional system

SEG Technical Program Expanded Abstracts 2007, 2007
For the past decade, volumetric seismic attributes have been used to help define depositional systems (Nissen et al., 1999, Posamentier, 2003). Seismic attributes provide the geometry of paleo-environments, particularly in settings where there is a sharp contrast in the geometry of adjacent systems, for instance in channel belts and associated systems.
Oyetayo M. Akintokunbo, Kurt J. Marfurt
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Geomorphology – Understanding the Near-surface Impact on Seismic Data

71st EAGE Conference and Exhibition - Workshops and Fieldtrips, 2009
Surface seismic data are significantly affected by the properties of the near-surface strata. We propose to integrate information extracted from geomorphology into the seismic processing workflow. Topography classification of the elevation and lithology information of satellite imagery allows mapping formation tops, which in turn, provide the basis for
A. Laake, A. Zaghloul, C. Strobbia
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3D seismic geomorphology of fluvial systems

2010
Fluvial sandstones constitute one of the major clastic petroleum reservoir types in many sedimentary basins around the world. This is especially true in the Tertiary basins of Southeast Asia, which display a wide range of fluvial channel reservoir types. This study is based on the analysis of high-resolution, shallow (seabed to ca.
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Geomorphologically-controlled seismic signals at Mount St. Helens volcano

2021
<p>In volcanoes, topography and shallow morphology can substantially modify seismic signals, tracing anisotropic signatures in the crust's most surficial layers. To better understand the influence of key morphologies, forward modelling of the seismic waveforms is fundamental.  Here, we introduce a forward model of the seismic
Luca De Siena, Simona Gabrielli, Matteo Spagnolo   +2 more
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The seismicity, geomorphology and structural evolution of the Corinth area of Greece

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1985
Abstract In the eastern Gulf of Corinth, geological structure is closely reflected in the topography. In the 1981 Corinth earthquakes ground deformation accentuated existing geomorphological patterns. We explore the relationship between seismicity and landforms in space and time.
C. Vita-Finzi, G. C. P. King
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Seismic Geomorphology and Evolution of Submarine Channels from the Angolan Continental Margin

Journal of Sedimentary Research, 2007
Abstract Three-dimensional seismic data from the shallow subsurface of the continental margin offshore Angola reveal two end-member morphological styles of submarine channel: (1) high-gradient, low-sinuosity, narrow channels with gull-winged levees, and (2) lower-gradient, deeply incised systems with moderate- to high-sinuosity ...
Gee, M. J R, Gawthorpe, Rob L., Bakke, K., Friedmann, S. J.   +3 more
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A New Method for Geomorphologically Ranking Stochastic Seismic Inversion Results

Proceedings, 2013
The band-limited vertical resolution of conventional 3D seismic measurements for reservoir characterization has an impact on our ability to accurately model thin reservoirs for volumetric computations. Stochastic seismic inversion addresses this concern by producing multiple, equally likely realizations, consistent with the available well and seismic ...
V.W.T. Kong, T. Dean, R. Cornect, C.M. Hobbs   +3 more
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Active tectonics, seismicity and geomorphology with special reference to Normandy (France)

Journal of Quaternary Science, 2000
Integrated studies based on tectonic, seismotectonic and geomorphological analyses indicate that Normandy (northwest France) has been an active area during the Quaternary. Topography and landform discontinuities reflect the dislocation and differential uplift of a late Cenozoic platform.
Lagarde, J.L., Baize, S., Amorese, D., Delcaillau, Bernard, Font, Marianne, Volant, P.   +5 more
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Buried Fluvial Channels: 3D-Seismic Geomorphology

1997
Fluvial channels potentially occur within the Quaternary stratigraphy of continental shelves world-wide, as a consequence of repeated glacioeustatic lowerings of relative sea level. Buried channels are well-suited to imaging by 3D-seismic methods due to a combination of contrast with surrounding materials and spatial resolution of their distinctive ...
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